Gas valve for gas cooking appliance

Abstract

The utility model relates to a gas valve for a gas cooking utensil. The gas valve includes a valve body including: an inlet pipe through which gas is supplied; at least one outlet duct through which the gas is supplied to the corresponding burner; an ignition duct; and a housing in fluid communication with the inlet conduit, the outlet conduit, and the ignition conduit. The gas valve further includes a flame gun including: an ignition tube including a first end, a second end, and a cavity extending from the first end to the second end, the first end being in fluid communication with the ignition conduit; and an igniter, the igniter comprising an ignition needle, the ignition needle cooperating with the second end of the ignition tube to generate a spark. The flame gun includes a first portion fixed to a fixed portion of the valve body, the first portion of the flame gun and the fixed portion of the valve body being configured such that the flame gun is coupled to the valve body in a predetermined orientation.

Description

Technical Field

[0001] The utility model relates to a gas valve used for a gas cooking appliance, in particular to a gas valve used for a gas barbecue rack. Background Art

[0002] Gas valves for cooking appliances (which include a flame gun that produces a long flame to ignite a corresponding burner) are known. This type of gas valve generally includes a valve body having an inlet pipe, an outlet pipe, an ignition pipe, and a housing in fluid communication with the inlet pipe, the outlet pipe, and the ignition pipe. The gas valve also includes a flame gun coupled to the valve body and an igniter coupled to the flame gun. Utility Model Content

[0003] The utility model aims to provide a gas cooking utensil, in particular a gas valve for a gas barbecue.

[0004] The gas valve of the utility model comprises a valve body, which comprises: an inlet pipe, through which the gas is supplied; at least one outlet pipe, through which the gas is supplied to the corresponding burner; an ignition pipe; and a shell, which is fluidly connected with the inlet pipe, the outlet pipe and the ignition pipe.

[0005] The gas valve also includes a flame gun, which includes: an ignition tube, the ignition tube including a first end, a second end and a cavity extending from the first end to the second end, the first end fluid is connected to the ignition pipe; and an igniter, the ignition needle, the ignition needle cooperates with the second end of the ignition tube to generate a spark.

[0006] The flame gun includes a first portion fixed to a fixed portion of a valve body, the first portion of the flame gun and the fixed portion of the valve body being configured such that the flame gun is coupled to the valve body in a predetermined orientation.

[0007] This configuration is particularly useful when proper ignition of the burner requires a specific orientation of the flame gun relative to the valve body.

[0008] Preferably, the first part of the flame gun includes a base plate, an upper edge extending vertically from the base plate, and a lower edge extending vertically from the base plate opposite to the upper edge, and the fixed part of the valve body is an extension portion extending vertically from the ignition pipe, and the fixed part is assembled into a space defined by the base plate, the lower edge and the upper edge.

[0009] Preferably, the first portion of the flame gun includes a first hole arranged in the substrate, the fixing portion of the valve body further includes a first fixing hole, and the flame gun is fixed to the valve body via a fixing element cooperating with the first hole and the first fixing hole.

[0010] Preferably, the first part of the flame gun includes a second hole arranged in the base plate, and the valve body includes a protrusion protruding vertically relative to the fixed part, the protrusion is accommodated in the second hole of the first part, the ignition pipe extends from the ignition inlet arranged in the shell to the end hole arranged in the protrusion, and the gas valve includes a sealing element arranged in the end hole.

[0011] Preferably, the flame gun includes a second part fixed to the igniter, the second part includes a base plate and a plurality of positioning flanges extending from the base plate, the base plate also includes at least one second fixing hole, the igniter is arranged between the plurality of positioning flanges and is fixed to the flame gun by a fixing clip cooperating with the at least one second fixing hole.

[0012] Preferably, the second end of the ignition tube includes a lateral opening having a contour, the lateral opening being arranged in front of the ignition needle, and the ignition tube also includes a deflection plate, which protrudes from the contour of the lateral opening into the interior of the cavity of the ignition tube, so that the deflection plate deflects at least a portion of the flow passing through the ignition tube to the ignition needle.

[0013] Preferably, the deflector is formed by bending a portion of a wall forming the ignition tube into the cavity.

[0014] Preferably, the size of the cavity of the ignition tube decreases continuously from the first end to the second end.

[0015] Preferably, the gas valve includes an ignition nozzle fluidly connected to the ignition pipe, the ignition nozzle is arranged in the first end of the ignition tube, and there is an air gap between the ignition nozzle and the first end of the ignition tube, so that air and gas flowing out of the ignition nozzle enter the cavity of the ignition tube.

[0016] Preferably, the ignition tube includes a cutout proximate the first end of the ignition tube to allow additional air to enter the cavity of the ignition tube.

[0017] These and other advantages and features of the present invention will become apparent in light of the accompanying drawings and detailed description of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A first stereoscopic view of an embodiment of a gas valve of the present utility model is shown.

[0019] Figure 2 Shows Figure 1 A second perspective view of the gas valve.

[0020] Figure 3 Shows Figure 1 A third stereogram of the gas valve.

[0021] Figure 4 Shows Figure 1 A fourth stereoscopic view of a gas valve.

[0022] Figure 5 Shows Figure 1 Fifth stereogram of the gas valve.

[0023] Figure 6 Shows Figure 1 First detailed view of the gas valve.

[0024] Figure 7 Shows Figure 1 A second detailed view of the gas valve.

[0025] Figure 8 Shows Figure 1 Cross-sectional view of a gas valve.

[0026] Fig. 9 Shows Figure 1 First stereoscopic view of the flame gun of the gas valve.

[0027] Fig.10 Shows Figure 1 Second perspective view of the flame gun of the gas valve.

[0028] Fig.11 Shows Figure 1 A first stereoscopic view of a valve body of a gas valve.

[0029] Fig.12 Shows Figure 1 A second stereoscopic view of the valve body of the gas valve. DETAILED DESCRIPTION

[0030] The utility model relates to a gas valve 1 used for a gas cooking appliance, in particular to a gas valve 1 used for a gas barbecue grill.

[0031] Figures 1 to 12 An embodiment of the gas valve of the utility model is shown.

[0032] The gas valve 1 comprises a valve body 10, the valve body 10 comprises an inlet pipe 11, through which gas is supplied and the inlet pipe 11 is configured to be connected to a gas supply pipe (not shown in the figure), at least one outlet pipe 12 is configured to be connected to a burner (not shown in the figure), and the valve body further comprises a housing 14 in fluid communication with the inlet pipe 11, the outlet pipe 12 and the ignition pipe 13.

[0033] The gas valve 1 further includes a flame gun 2 fixed to the valve body 10. The flame gun 2 is configured to generate a flame to ignite a burner connected to the outlet pipe 12.

[0034] The flame gun 2 includes an ignition tube 20, which includes a first end 200, a second end 201, and a cavity 204 extending from the first end 200 to the second end 201. The first end 200 is fluidically connected to the ignition pipe 13, so that the gas exhausted from the ignition pipe 13 enters the ignition tube 20 through the first end 200. The first end 200 also allows air to enter the cavity 204 of the ignition tube 20, so that a mixture of gas and air flows from the first end 200 through the cavity 204 to the second end 201.

[0035] The flame gun 2 further comprises an igniter 3 , which comprises an ignition needle 30 , and the ignition needle 30 cooperates with the second end 201 of the ignition tube 20 to generate sparks.

[0036] Preferably, the gas valve 1 comprises a manually operable shaft 18. The gas valve 1 further comprises an adjusting element 17, which is arranged in the housing 14 of the valve body 10 and is suitable for adjusting the incoming gas flow from the inlet pipe 11 towards the at least one outlet pipe 12 according to its angular position. The shaft 18 comprises a first end, which is coupled to the adjusting element 17, so that the two components move together. The shaft 18 further comprises a second end, which is configured to be coupled to a knob that can be operated by a user, so that the two components move together. The shaft 18 rotates from an initial angular position corresponding to an OFF position (in the OFF position, the adjusting element 17 closes the gas passage from the inlet pipe 11 to the outlet pipe 12) to a final angular position, so that the user can change the gas flow directed to the corresponding burner according to the angular position of the knob and thus the angular position of the shaft 18 and the adjusting element 17.

[0037] Preferably, the adjustment element 17 comprises: an inner cavity including an inner conduit having a first end and a second end; an inner shaft 170, which is partially disposed in the inner conduit and can be axially displaced between a blocking axial position and an ignition axial position; a first O-ring 172 and a second O-ring 173 disposed around the inner shaft 170; and a spring 171, which cooperates with the inner shaft 170 to bias the inner shaft 170 toward the blocking axial position. When the inner shaft 170 is arranged in the blocking axial position, the first O-ring 172 seals the first end of the inner conduit and prevents the flow of gas from entering the inner conduit. In some angular positions of the shaft 18, and therefore in some angular positions of the adjustment element 17 (which correspond to the ignition angular positions), when the user pushes the shaft 18, the first end of the shaft 18 pushes the inner shaft 170, thereby overcoming the force of the spring 171, so that the inner shaft 170 is arranged in the ignition axial position. When the inner shaft 170 is arranged in the ignition axial position, the inner shaft 170 displaces the first O-ring 172, thereby allowing the gas flow to enter the inner pipe from the inlet pipe 11 to reach the ignition pipe 13, so that the gas flow enters the ignition tube 20. The ignition angle position is arranged between the initial angle position and the final angle position of the shaft 18, where there is a gas flow between the inlet pipe 11 and the outlet pipe 12, so that when the shaft 18 is arranged in the ignition angle position and the user pushes the shaft 18, the gas flow from the inlet pipe 11 to the outlet pipe 12 and to the ignition pipe 13 occurs simultaneously, so that a flame can be generated in the flame gun 2 to ignite the burner connected to the outlet pipe 12. When the inner shaft 170 is arranged in the ignition axial position, the second O-ring 173 prevents the gas flow from leaving through the second end of the inner pipe.

[0038] Preferably, the gas valve 1 further comprises an ignition discharge device 19 which cooperates with a cam 190 arranged in the shaft 18 and is configured to send an electrical signal to the ignition needle 30 when the shaft 18 is arranged in an ignition angle position and an ignition axial position allowing gas to flow through the ignition pipe 13.

[0039] The flame gun 2 includes a first portion 21 a fixed to a fixing portion 131 of the valve body 10 , and the first portion 21 a of the flame gun 2 and the fixing portion 131 of the valve body 10 are configured such that the flame gun 2 is coupled to the valve body 10 in a predetermined orientation.

[0040] Preferably, the first part 21a of the flame gun 2 includes a base plate 21, an upper edge 212 extending vertically from the base plate 21, and a lower edge 213 extending vertically from the base plate 21 opposite to the upper edge 212; and the fixed part 131 of the valve body 10 is an extension part extending vertically from the ignition pipe 13, and the fixed part 131 of the valve body 10 is assembled into the space defined by the base plate 21, the lower edge 213 and the upper edge 212.

[0041] Preferably, the first part includes a first hole 210 arranged in the base plate 21 , the fixing part 131 of the valve body 10 further includes a first fixing hole 133 , and the flame gun 2 is fixed to the valve body 10 via a fixing element 23 cooperating with the first hole 210 and the first fixing hole 133 .

[0042] Preferably, the first portion 21a includes a second hole 211 arranged in the base plate 21, and the valve body 10 includes a protrusion 134 protruding vertically relative to the fixing portion 131 (see Fig.12 ), the protrusion 134 is accommodated in the second hole 211 of the first part 21a, the ignition pipe 13 extends from the ignition inlet 135 arranged in the shell 14 to the end hole 132 arranged in the protrusion 134, and the gas valve 1 includes a sealing element 22 arranged in the end hole 132.

[0043] Preferably, the flame gun 2 includes a second part 21b fixed to the igniter 3, the second part 21b includes a base plate 21 and a plurality of positioning flanges 215 extending from the base plate 21, the base plate 21 also includes at least one second fixing hole 214, the igniter 3 is arranged between the positioning flanges 215 and is fixed to the flame gun 2 by a fixing clip 31 cooperating with the at least one second fixing hole 214.

[0044] Preferably, the second end 201 of the ignition tube 20 comprises a lateral opening 203 having a profile, the lateral opening 203 being arranged in front of the ignition needle 30. Preferably, the profile of the lateral opening 203 is a closed profile as in the embodiment shown in the drawings.

[0045] Preferably, the ignition tube 20 comprises a deflector 205 which protrudes from the contour of the lateral opening 203 into the interior of the cavity 204 of the ignition tube 20, such that the deflector 205 deflects at least a portion of the flow through the cavity 204 of the ignition tube 20 to the ignition needle 30. The fact that the deflector 205 protrudes (i.e. extends) from the contour of the lateral opening 203 provides an easy-to-manufacture solution which avoids the need to attach additional components to the ignition tube 20 in order to deflect a portion of the flow through the cavity 204 of the ignition tube 20.

[0046] Preferably, the deflector blade 205 is formed by bending a portion of the wall forming the ignition tube 20 into the cavity 204, so that the deflector blade 205 is integral with the wall forming the ignition tube 20. More preferably, the bending of the deflector blade 205 is adjustable according to the requirements of each case, so that the deflector blade 205 can be oriented within the cavity to meet the requirements of each specific application.

[0047] Preferably, the size of the cavity 204 of the ignition tube 20 decreases continuously from the first end 200 to the second end 201. This structure can increase the speed of the gas and air mixture flowing through the cavity 204.

[0048] Preferably, the gas valve 1 comprises an ignition nozzle 16 in fluid communication with the ignition pipe 13, the ignition nozzle 16 being arranged in the first end 200 of the ignition tube 20, with an air gap between the ignition nozzle 16 and the first end 200 of the tube 20 (see Figure 3 ), so that the air and gas flowing out of the ignition nozzle 16 enter the cavity 204 of the ignition tube 20. In the embodiment shown in the drawings, the valve body includes an ignition outlet 130 (see Fig.11 ), the ignition nozzle 16 is arranged in the ignition outlet 130.

[0049] Preferably, the gas valve 1 further comprises a main nozzle 15 arranged in the outlet of the outlet pipe 12, and the main nozzle is connected to a corresponding burner (not shown in the figure).

[0050] Preferably, the ignition tube 20 includes a cutout 202 in or near the first end 200 of the ignition tube 20 to allow additional air to enter the cavity 204 of the ignition tube 20. In some embodiments, particularly when the ignition tube is relatively long, such as in the embodiment shown in the drawings, the air gap between the ignition nozzle 16 and the first end 200 of the ignition tube 20 is insufficient to allow sufficient air to enter the ignition tube 20, so the cutout 202 allows the required additional air to enter.

Claims

1. A gas valve for a gas cooking appliance, the gas valve comprising: - a valve body (10), comprising: ■ an inlet pipe (11) through which the gas is supplied; ■ at least one outlet conduit (12) through which the gas is supplied to a corresponding burner; ■ an ignition pipe (13); and ■ a housing (14) in fluid communication with the inlet duct (11), the outlet duct (12) and the ignition duct (13); The gas valve (1) further comprises: - a flame gun (2), the flame gun comprising an ignition tube (20), the ignition tube comprising: ■ a first end (200) which is fluidically connected to the ignition conduit (13); ■ a second end (201); and ■ a cavity (204) extending from the first end (200) to the second end (201); and - an igniter (3) comprising an ignition needle (30) cooperating with the second end (201) of the ignition tube (20) to generate a spark, The flame gun (2) comprises a first portion (21a) fixed to a fixing portion (131) of the valve body (10), The first portion (21a) of the flame gun (2) and the fixing portion (131) of the valve body (10) are configured such that the flame gun (2) is coupled to the valve body (10) in a predetermined orientation.

2. The gas valve for a gas cooking appliance according to claim 1, characterized in that: The first part (21a) of the flame gun (2) includes a base plate (21), an upper edge (212) extending vertically from the base plate (21), and a lower edge (213) extending vertically from the base plate (21) and opposite to the upper edge (212), and the fixing part (131) of the valve body (10) is an extension part extending vertically from the ignition pipe (13), and the fixing part (131) is assembled into a space defined by the base plate (21), the lower edge (213) and the upper edge (212).

3. The gas valve for a gas cooking appliance according to claim 2, characterized in that: The first part of the flame gun (2) includes a first hole (210) arranged in the base plate (21), and the fixing part (131) of the valve body (10) further includes a first fixing hole (133). The flame gun (2) is fixed to the valve body (10) by a fixing element (23) that cooperates with the first hole (210) and the first fixing hole (133).

4. The gas valve for a gas cooking appliance according to claim 3, characterized in that: The first part (21a) of the flame gun (2) includes a second hole (211) arranged in the base plate (21), and the valve body (10) includes a protrusion (134) protruding vertically relative to the fixed part (131), and the protrusion (134) is accommodated in the second hole (211) of the first part (21a), the ignition pipe extends from an ignition inlet (135) arranged in the housing (14) to an end hole (132) arranged in the protrusion (134), and the gas valve (1) includes a sealing element (22) arranged in the end hole (132).

5. The gas valve for a gas cooking appliance according to claim 1, characterized in that: The flame gun (2) comprises a second part (21b) fixed to the igniter (3), the second part (21b) comprising a base plate (21) and a plurality of positioning flanges (215) extending from the base plate (21), the base plate (21) further comprising at least one second fixing hole (214), the igniter (3) being arranged between the plurality of positioning flanges (215) and being fixed to the flame gun (2) by a fixing clip (31) cooperating with the at least one second fixing hole (214).

6. The gas valve for a gas cooking appliance according to any one of claims 1 to 5, characterized in that: The second end (201) of the ignition tube (20) includes a lateral opening (203) having a profile, and the lateral opening (203) is arranged in front of the ignition needle (30). The ignition tube (20) also includes a deflection plate (205), which protrudes from the profile of the lateral opening (203) to the interior of the cavity (204) of the ignition tube (20), so that the deflection plate (205) deflects at least a portion of the flow passing through the ignition tube (20) to the ignition needle (30).

7. The gas valve for a gas cooking appliance according to claim 6, characterized in that: The deflector (205) is formed by bending a portion of a wall forming the ignition tube (20) into the cavity (204).

8. The gas valve for a gas cooking appliance according to any one of claims 1 to 5, characterized in that: The size of the cavity (204) of the ignition tube (20) decreases continuously from the first end (200) to the second end (201).

9. The gas valve for a gas cooking appliance according to any one of claims 1 to 5, characterized in that: The gas valve comprises an ignition nozzle (16) in fluid communication with the ignition pipe (13); the ignition nozzle (16) is arranged in the first end (200) of the ignition tube (20); an air gap exists between the ignition nozzle (16) and the first end (200) of the ignition tube (20), so that air and gas flowing out of the ignition nozzle (16) enter the cavity (204) of the ignition tube (20).

10. The gas valve for a gas cooking appliance according to any one of claims 1 to 5, characterized in that: The ignition tube (20) includes a cutout (202) proximate a first end (200) of the ignition tube (20) to allow additional air to enter a cavity (204) of the ignition tube (20).

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